Support for reducing-wheels.



F. L. WDLFE.

SUPPORT FOR REDUCING WHEELS.

(Application led Feb. 9, 1900.)

(Ilo Model.)

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Patented Dec.L 24, I90l.

i NTESTATES arENfr Fries.

FRANK L. WOLFE, OF MEDFORD, MASSACHUSETTS, ASSIGNOR TO THE CROSBY STEAM GAGE da VALVE COMPANY, OF BOSTON, MASSACHU- SETTS, A CORPORATION OF MASSACHUSETTS.

SUPPORT FOR REDUClNG-WHEELS.

SPECIFICATION forming part of Letters Patent No. 689,528, dated December 24, 1901- Application filed February 9, 1900. Serial No. 4,631. (No model.)

To all whom it may concern,.-

Be it -known that I, FRANK LWOLFE, a citizen of the United States, and a resident of Medford,in the county of Middlesex and State of Massachusetts, have invented certainnew and useful Improvements in Supports for Reducing Mechanism, of. which the following is a specification. l

My invention relates to improvements in reducing-wheels or reducing mechanism for steam-engine indicators, and more part-icularly to the support for suchreducing mechanism. Its object is to provide for attaching such support directly to the cylinder of the steam-engine or to an indicator-cock interposed between it and the cylinder, thereby relieving the steam-engine indicator from sevvere strains and avoiding consequent errors. Reducing-.motions similaruin purpose are well known; but heretofore inv all cases they have consisted of independent means erect` ed between the cross-head of the steam-engine and the indicator attached to the cylinder thereof or they have been so designed as to be attached tol the indicator itself below the drum thereof.` In the first case it is inconvenient, cumbersome, and often inopmovement of the cross-head.

erative or Very difficult to operate. lIn the other case its attachment to the indicator tends to distort or injure the indicator bythe strain which is thus brought upon itloy the It is to avoid both of these defects that this instrument is designed. l-Iere all strains and distortions are confined to the reducing-wheel and arer not transmitted to the indicator, as may be readily observed. I attain these objects by the mechanism illustrated in the accompanying drawings, in whichl Figure l is a vertical elevation of the machine with the exception of a portion at the right lower part which is broken off, but seen in section in Fig. 2, showing the steamengine indicator in dotted lines attached thereto. Fig. 2 is a sectional View on line 2 2, Fig. 1; Fig. 3 is a sectional View on the line 3 3, Fig. l. Fig. 4 is a sectional view on the line 4. 4, Fig. l. Fig. 5 is a perspective View of the part bs, Fig. 1. Fig. 6 is a plan hub.

bearings for the balls 0.4.

View showing 'the inner end A2 of the supporting-arm A.

i Similar letters refer to similar parts throughout the several views.

The supporting-arm A has its outer end A formed as a clamp and furnished with the binding-screw d, employed to bind it to the bushing 0,2, which is threaded at its upper end for attachment to the indicator (shown in dotted lines) and furnished at its lower end with the coupling a for attachment to the indicator-cock of the cylinder of the steam-engine. Through this bushing steam fiows from the cylinder of the steam-engine into the indicator. The pin e serves to lock the clamp tothe bushing. The inner end A2 of the supporting-arm is in the form of a The bushing a3 fits tightly in this hub and is countersunk at either end to form its outer end Q14 squared, and tothis squared end is tted the removable cap au, made with the annular groove (i12, in whichris fastened by solder or otherwise the outer end of the spiral spring d10, and with the annular groove d to receive the outer end of the casing 0.13. The cap au is held in place by the screw @15. The casing als and the spring d10 at their inner ends engage the threaded portions of the sleeve a8, which is fastened to the hub A2 by the screws a?, which pass through corresponding lugs on the sleeve and the hub. The collar ai engages the threaded portion of the shaft a5 and forms a bearing for the balls a", being held in place by the-lock-nut a7. The shaft a5 is made smal-ler near its inner end to receive the gear-hub f, formed to serve as a bearing for the balls a4. Upon this hub f is fastened a diskl an, which is perforated near its outer circumference by the screws g. The shaft d5 is made still smaller at its inner end and threaded to receive the knurled nut 0.18, to which is fixed the disk h. Upon the vshaft 0.5 between the disks a. and h are carried the nest of pulleys 0h19, composed of several rings fitting one over the other, the innermost itting over the hub f. The hub A2 is made with the socket i, and into this socket is tightly tted the shaft B, upon which is loosely litted the sleeve b', terminating at its inner end in the bevel-gear bw. This sleeve b has a threaded portion 7c anda fiange b3 and has its outer end Z910 squared to receive the cap bs and threaded to receive the nut bu. To the flange b3 is fastened the pulley b2 by the screws b4. To the movable cap h3 are xed the posts b, employed as guides for the threaded hub b5, which engages the threaded portion of the sleeve b. To the hub b5 is clamped the arm b6,with the bindingscreW 197, and to this arm is liXed the post b, through the eye of Which travels the cord 515.

The operation of the machine is as follows: The outer end of the cord 1915 is attached to the cross-head of the steam-engine in the usual way, and as the cross-head moves the cord unWinds and rotates the pulley b2 and r0- tates through the coacting gears Z716 and ctw the shaft a5 and increases the tension of the spring d10, and rotates also the pulley al, thereby Winding thereon the cord c3, operating the indicator-drum C. Upon reversing the motion of the cross-head the action ofthe machine is reversed bythe recoil of the spring, and thus the cord is kept taut in both its forward and return movements. The hub b5 is prevented from rotary motion by the guideposts bm, but has a vertical motion due to its engagement With the threaded portion of the sleeve b Whenever the sleeve is rotated, and so carries up or down the arm b, thus preventing the overlapping on itself of the cord 615. The disks h and a form anges and serveto hold in place the cord c3, which is fastened to one of the perforations c2 in the disk a and which leads therefrom over pulleys c c to the indicator-drum, as shown in dotted lines. The spring am is given the proper tension by means of the movable cap a, Which may be removed from the shaft a5 and turned as far as desired and then locked in place by the screw n.15, as explained. From the nest of pulleys @19 is selected such a one as shall give to the drum C the desired rotation. The ball-bearings are placed Wl'lere they can best perform their function.

adjustable arm b gives any desired direction to the cord 7115.

Having described my invention, what I claim, and desire to secure by Letters Patent, 1s-

1. In a reducing-wheel the combination,

With a supporting-arm having one end adapted to be attached to the cylinder of a steamengine and to receive a steam-engine indicator, of a reducing mechanism; substantially as described.

2. In a reducing-Wheel a supporting-arm having one end furnished with a bushing, the lower part of which is adapted to be attached to the cylinder of a steam-engine, and the upper part of which is adapted to receive a steam-engine indicator, such bushing constituring a duct, or passage, through which the steam will flow directly from the cylinder of the steam-engine into the steam-engine indicator; the other end of such supporting-arm being adapted to support a reducing mechanism; substantially as described.

3. In a reducing-Wheel a supporting-arm having one end adapted to be attached to the cylinder ofa steam-engine, to receive asteamengine indicator, and to constitute a duct, or passage, for the tloW of steam from the cylinder into the indicator; the other end of said supporting-arm being adapted to support a reducing mechanism; substantially as described.

4. In a reducing-wheel the combination of the supporting-arm A with its end A and bushing 0.2 adapted to receive a steam-engine indicator, to be attached to the cylinder of a steam-engine, and to permit the flow through it of steam from said cylinder to said indicator, and a reducing mechanism; substantially as described.

In testimony whereof I have affixed my signature in presence of two Witnesses.

FRANK L. WOLFE.

Witnesses:

CHAs. M. REED, RALPH W. FOSTER. 

